code: def __init__(self, backbone):
      super().__init__()
      self.backbone = backbone
      self.projection_head = SimCLRProjectionHead(512, 512, 128)
  
file_path: lightly/examples/pytorch/dcl.py
imports: import torch
  import torchvision
  from torch import nn
  from lightly.loss import DCLLoss
  from lightly.models.modules import SimCLRProjectionHead
  from lightly.transforms.simclr_transform import SimCLRTransform
label_desc: Use image node_id 1 to create a new DCL object from inherited base classes: nn with example: obj = DCL(backbone)